Use Microsoft Access under Windows which you install alongside Mac OS on your Mac. This will give you
full compatibility. Unfortunately it is also expensive and time consuming to install and keep Windows running, up to date and
virus free, unless you happen to know Windows well.

Use a PC running Microsoft Access on Windows to export the database as CSV files. Then import those CSV files in either
Bento (for simple databases) or FileMaker Pro (for advanced databases). This also
requires work, mainly learning a new database application and cleaning up data.

Run Microsoft Access under Crossover, export your data, and import it in a database like Bento or FileMaker. Crossover is
a 95% Windows replacement (requires a Mac with an Intel processor), and it partly runs MS Access